schofield



2 Sheets-Sheet 1;

(No Model.)

A. B. SGHOFIELD.

PAVING BLOCK.

Patented Nov. 25, 1.890. I'q'gfl. y

Zfiineaw ea (No Model;) 2 Sheets-Sheet 2. A.-B. SGHOPIELD.

PAVING BLOCK;

Patented Nov. 25, 1890.-

vNO. 441

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UNITED STATES ATENT FFICEQ ALBERT B. SCIIOFIELD, OF NFJV YORK, N. Y.

PAVING-BLOCK.

SPECIFICATION forming part of Letters Patent No. 441,332, dated November25, 1890.

Application filed February 3, 1390- Serial No. 339,018. (No model.)

T0 at whonz/ it may concern:

Be it known that I, ALBERT B. SCHOFIELD, of New York, in the county andState of New York, haveinvented a certain new and useful Improvement inPaving-Blocks, of which the following is a specification.

My improvement relates to blocks employed in paving streets.

I will describe in detail a paving-block embodyin g my improvement, andthen point out the novel features in claims.

In the accompanying drawings, Figure 1 is a plan or top view ofapaving-block embodying my improvement. Fig. 2 is a perspective viewlooking from the under side of the block. Fig. 3 is a transversevertical section taken on the line 00 00, Fig. 1. Fig. i is a plan viewshowing the arrangement of a number of blocks embodying my improvementto form a pavement. Fig. 5 is a sectional View of one of the blocks,illustrating a modification and taken at right angles to Fig. 3 and onthe line 3 y, Fig. 1.

Similar letters of reference designate corresponding parts in all thefigures.

My improvement comprises a box or case A, having a closed bottom a,substantially vertically-extending sides a, and an open top. This box orcase is shown as rectangular in shape and is to be made of metal,preferably iron. The interior of the box or case is to be filled in withany suitable concrete B, which may be asphalt mixed with gravel orbroken stone or any other suitable compound which hardens upon exposure.I prefer that this box or case should be divided into two or morecompartments, and I have shown it as divided into two compartments Bwhich com partments extend in the direction of the length of the box orcase, the box or case being shown as longer than it is wide. Suchcompartments are formed by a partition B, which extends upwardly fromthe bottom of the box or case about midwaybetween the sides there of andapproximately to the top or upper edge of the same. The partition shownin Figs. 1, 2, and 4 is solid; but it need not necessarily be so, as itmay be recessed or indented, for instance, as is shown more clearly inFig. 5. I may also desire to provide strengtheningpieces for the box orcase. The strengthening-pieces may extend between the side walls a andthe bottom a, or between the side walls a and the partition B. I haveshown such strengthening-pieces as extending between and connected tothe side walls a, the bottom a, and the partition B. Thesestrengthening-pieces in the example shown do not extend to the top orupper edge of the box or case. They may be of any desired number andarranged in any suitable manner.

It isadvantageous to thicken the box or case upon its exterior and nearits upper edge. This I have shown as done by a continuous rib or flangeD, extending about the box or case. The said rib or flange need not,however, be continuous, but may be interrupted. The rib or flangestrengthens the box or case near its upper edge and provides an extendedbearing-surface. I prefer that the said rib or flange should beinclined, as by rounding it off or beveling it off at its outer edgeportion and at its top, as shown more clearly in Figs. 3 and 5. Thecorners of the box or case at the top portion I also prefer should berounded, as shown more clearly at D in Fig. 1. By thus inclining theedges of the flange D grooves, as it were, are formed between the blockswhen the latter are laid in the street, as shown more clearly in Fig.4:, which afford a footing for horses traveling over the pavement. Bymaking the corners of the box or case near the upper edge rounding anopening is left, as at e, between the corners of adjacent blocks, intowhich a crow-bar or similar tool may be inserted in order to lift out ablock. Providing the box or case with a thickened portion at its cornersis also advantageous in this, that the end of acrow-bar or other toolmay be caught under said thickened portion, and the block maybe thuseasier pried out. here the partition B is not used,

I prefer to make the block one of such width that a wheel of a vehiclein passing over it will substantially contact with the two sides a ofthe box or case, so that but little wear will be given the concrete orsimilar substance therein. If the partition B is used, the block may beof such width that the wheel of avehicle will substantially contactwithone of the side walls a andvwith said partition.

My improvement isadvantageous because the blocks when laid in'the streetform a pavement which possesses the advantages of a smoothpave1nentsuch, for instance, as asphalttogether with the advantages of ablock pavement of wood or stone, while the individual blocks possessgreat wear and strength and are readily put in place or removed.

What I claim as my invention, and desire to secure by Letters Patent, is

1. A paving-block comprising a box or case having an open top and closedbottom, the sides being bulged outwardly near their upper edges, therebyseparating the adjacent blocks from one another, excepting at the bulgedportions, the said case or box being substantially filled with concrete,substantially as herein described.

2. A paving-block comprising a box or case having an open top and aclosed bottom, the

sides being provided with an outward bulge near their upper edges andtheir upper edges being beveled downwardly and outwardly toward theouter portion of the bulge, the box or case being substantially filledwith concrete or similar material, substantially as herein described.

3. A paving-block comprising abox or case having sides, a closed bottom,and an open top, the corners of said box being thickened near the upperedge of the box or case and rounded, and said box or case beingsubstantially filled with concrete or similar material, substantially asspecified.

ALBERT B. SOHOFIELD.

WVitnesses:

FREDK. HAYNES, GEORGE BARRY.

